Cascaded Block Search - Siemens SINUMERIK 828D Function Manual

K1: Mode group, channel, program operation, reset response
9.7 Block search
9.7.4

Cascaded block search

Functionality
The "Cascaded block search" function can be used to start another block search from the status "Search target
found". The cascading can be continued after each located search target as often as you want and is applicable
to the following block search functions:
• Type 1 block search without calculation
• Type 2 block search with calculation at contour
• Type 3 block search with calculation at block end point
Note
Another "cascaded block search" can be started from the stopped program execution only
if the search target has been found.
Activation
The "cascaded block search" is configured in the existing machine data:
MD11450 $MN_SEARCH_RUN_MODE
• Cascaded block search is enabled (i.e., several search targets can be specified)
with Bit 3 = 0 (FALSE).
• For compatibility reasons, the cascaded block search can be disabled with Bit 3 = 1 (TRUE). By default, the
cascaded block search is set with Bit 3 = 0.
Execution behavior
Search target found, restart search
When the search target is reached, the program execution stops and the search target is displayed as a current
block. After each located search target, a new block search can be repeated as often as you want.
Change search target specifications
You can change the search target specifications and block search function prior to each block search start.
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions